// Copyright 2011 Google Inc.
//
// This code is licensed under the same terms as WebM:
//  Software License Agreement:  http://www.webmproject.org/license/software/
//  Additional IP Rights Grant:  http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// -----------------------------------------------------------------------------
//
// Copyright 2011-2013 Dominik Homberger
// Libwebp Javascript / libwebpjs - the libwebp implementation in javascript (v0.2.0)
//
// Author: Dominik Homberger (dominik.homberger@gmail.com)

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e)return Y(a,"VP8_STATUS_NOT_ENOUGH_DATA","bad partition length");h=a.o;D(h,d,c,c+g.Ra);c+=g.Ra;e-=g.Ra;g.fb&&(k.uc=G(h),k.$c=G(h));var k=h,n=a.Ca,l=a.R;$(k!=p);$(n!=p);n.pb=G(k);if(n.pb){n.ob=G(k);if(G(k)){var m;n.tb=G(k);for(m=0;m<xa;++m)n.Kb[m]=G(k)?ga(k,7):0;for(m=0;m<xa;++m)n.Cb[m]=G(k)?ga(k,6):0}if(n.ob)for(m=0;m<Ld;++m)l.Ta[m]=G(k)?S(k,8):255}else n.ob=0;if(k.Ab)return Y(a,"VP8_STATUS_BITSTREAM_ERROR","cannot parse segment header");k=h;n=a.ga;n.Oc=G(k);n.Fb=S(k,6);n.kb=S(k,3);n.oc=G(k);if(n.oc&&
G(k)){for(l=0;l<Hc;++l)G(k)&&(n.Lc[l]=ga(k,6));for(l=0;l<Gf;++l)G(k)&&(n.Gc[l]=ga(k,6))}a.A=0==n.Fb?0:n.Oc?1:2;if(0<a.A)if(a.Ca.pb)for(l=0;l<xa;++l)m=a.Ca.Cb[l],a.Ca.tb||(m+=n.Fb),a.Zb[l]=m;else a.Zb[0]=n.Fb;if(k.Ab)return Y(a,"VP8_STATUS_BITSTREAM_ERROR","cannot parse filter header");var k=d,f=c,n=f,e=f+e;m=0;var q=s,r=s;a.Hb=1<<S(a.o,2);q=a.Hb-1;l=k;m=f+3*q;if(e<m)e="VP8_STATUS_NOT_ENOUGH_DATA";else{for(r=0;r<q;++r){var f=l,u=m+(k[n+0]|k[n+1]<<8|k[n+2]<<16);u>e&&(f=k);D(a.ic[+r],l,m,u);l=f;m=u;
n+=3}D(a.ic[+q],l,m,e);e=m<e?"VP8_STATUS_OK":"VP8_STATUS_SUSPENDED"}if("VP8_STATUS_OK"!=e)return Y(a,"VP8_STATUS_BITSTREAM_ERROR","cannot parse partitions");q=a.o;e=S(q,7);k=G(q)?ga(q,4):0;n=G(q)?ga(q,4):0;l=G(q)?ga(q,4):0;m=G(q)?ga(q,4):0;q=G(q)?ga(q,4):0;r=a.Ca;f=s;for(f=0;f<xa;++f){u=s;if(r.pb)u=r.Kb[f],r.tb||(u+=e);else if(0<f){a.yb[f]=a.yb[0];continue}else u=e;var v=a.yb[f];v.sc[0]=Ic[wa(u+k,127)];v.sc[1]=Jc[wa(u+0,127)];v.sb[0]=2*Ic[wa(u+n,127)];v.sb[1]=101581*Jc[wa(u+l,127)]>>16;8>v.sb[1]&&
(v.sb[1]=8);v.qc[0]=Ic[wa(u+m,117)];v.qc[1]=Jc[wa(u+q,127)]}if(g.fb)a.Zc=259;else return Y(a,Hf,"Not a key frame.");G(h);e=a.R;for(k=0;k<Md;++k)for(n=0;n<Nd;++n)for(l=0;l<Kc;++l)for(m=0;m<Lc;++m)w(h,If[k][n][l][m])&&(e.z[k][n][l][m]=S(h,8));a.pc=G(h);a.pc&&(a.Pc=S(h,8));if(a.P.uc){c-=8;h=Mb;if(8>g.Ra||1!=d[c+8-1])return Y(a,W,"RIFF: Inconsistent extra information.");h=d[c+0]<<0|d[c+1]<<8|d[c+2]<<16;a.fc=h;a.dd=p;a.cd=d[c+3]}return a.za=1}function Mc(a,b,c,d,e,g){var k=b[e][c];if(!w(a,k[0]))return 0;
for(;;){++e;if(w(a,k[1])){var h;if(w(a,k[2])){if(w(a,k[3]))if(w(a,k[6])){h=x;c=w(a,k[8]);k=w(a,k[9+c]);k=2*c+k;c=0;h=Jf[k];var n;for(n=0;n<h.length-1;++n)c+=c+w(a,h[n]);c+=3+(8<<k)}else w(a,k[7])?(c=7+2*w(a,165),c+=w(a,145)):c=5+w(a,159);else c=w(a,k[4])?3+w(a,k[5]):2;k=b[Nc[e]][2]}else k=b[Nc[e]][1],c=1;h=Kf[e-1];g[g[g.length-1]+h]=(w(a,128)?-c:c)*d[(0<h)+0];if(16==e||!w(a,k[0]))return e}else k=b[Nc[e]][0];if(16==e)return 16}}function ob(a,b){return((16777216*a[0]+65536*a[1]+256*a[2]+1*a[3])*Lf&
4278190080)>>b}function Mf(a,b){var c=0;if(a==p)return 0;if(b==p)return Y(a,"VP8_STATUS_INVALID_PARAM","NULL VP8Io parameter in VP8Decode().");if(!a.za&&!Hd(a,b))return 0;$(a.za);var d;if(b.Mb&&!b.Mb(b))Y(a,Nf,"Frame setup failed"),d=a.a;else{b.Za&&(a.A=0);var e=uc[a.A];2==a.A?(a.lb=0,a.mb=0):(a.lb=b.t-e>>4,a.mb=b.k-e>>4,0>a.lb&&(a.lb=0),0>a.mb&&(a.mb=0));a.Ya=b.K+15+e>>4;a.wb=b.Ka+15+e>>4;a.wb>a.Ma&&(a.wb=a.Ma);a.Ya>a.hb&&(a.Ya=a.hb);d=L}if(c=d==L){if(c){var g;b:{a.Ja=0;if(a.qb){var k=a.rc;if(!WebPWorkerReset(k)){g=
Y(a,cb,"thread initialization failed.");break b}k.Qd=a;k.Rd=a.oa.N;k.Ud=FinishRow;a.jb=0<a.A?Od:Od-1}else a.jb=Of;g=1}var h;if(!(h=!g)){var n;b:{var l=a.jb,m=a.Ma,t=4*m,q=32*m,r=m+1,u=0<a.A?m*(a.qb?2:1):0,v=Pf,C=q*(16*l+parseInt(3*uc[a.A]/2,10)),A=a.Ga!=p?a.P.l*a.P.v:0,z=t+q+r+u+v+384+C+A+Pd;if(z!=z)n=0;else{if(z>a.Gb){a.ib=0;a.Gb=0;if(a.ib==p){n=Y(a,"VP8_STATUS_OUT_OF_MEMORY","no memory during frame initialization.");break b}a.Gb=z}a.dc=205;a.Xc=rc(205,16*m);a.Sc=rc(205,8*m);a.Vc=rc(205,8*m);a.M=
u?ic(Oc,u):p;a.Sd=u?0:p;a.oa.ha=0;a.oa.M=a.M;$(0==(v&Pd));a.Ea=rc(205,1*v);a.z=-12851;a.H=16*m;a.r=8*m;var Ha=uc[a.A],G=Ha*a.H,y=Ha/2*a.r;a.ca=U(C,205);a.da=+G;a.aa=a.ca;a.ba=a.da+16*l*a.H+y;a.ra=a.aa;a.sa=a.ba+8*l*a.r+y;a.Xb=A?U(A,x):p;a.La=ic(Qd,r);a.dc=rc($b,t);n=1}}h=!n}if(h)c=0;else{b.width=a.P.l;b.height=a.P.v;b.w=0;b.y=a.ca;b.D=a.da;b.c=a.aa;b.B=a.ba;b.S=a.ra;b.C=a.sa;b.F=a.H;b.Da=a.r;b.p=p;b.q=p;if(!Rd){var B;for(B=-255;255>=B;++B)va[255+B]=0>B?-B:B,tc[255+B]=va[255+B]>>1;for(B=-1020;1020>=
B;++B)sc[1020+B]=-128>B?-128:127<B?127:B;for(B=-112;112>=B;++B)oc[112+B]=-16>B?-16:15<B?15:B;for(B=-255;510>=B;++B)oa[255+B]=0>B?0:255<B?255:B;Rd=1}mc=pf;Pc=qf;Qc=nc;Rc=rf;Sd=uf;Td=vf;Ud=yf;Vd=zf;Wd=wf;Xd=xf;Yd=Af;Zd=Bf;$d=Dd;ae=Ed;be=sf;ce=tf;c=1}}if(c)a:{for(a.d=0;a.d<a.Ya;++a.d){var Qf=a.ic[a.d&a.Hb-1],db=a,F=db.La[0];F.X=0;F.ua=0;jd(db.cc,0,$b,db.cc.length);db.W=(0<db.A&&db.d>=db.mb&&db.d<=db.Ya)+0;for(a.i=0;a.i<a.Ma;a.i++){var D;var H=a,T=Qf,ya=H.o,S=H.La[0],J=H.La[1+H.i];H.Ca.ob&&(H.Lb=!w(ya,
H.R.Ta[0])?0+w(ya,H.R.Ta[1]):2+w(ya,H.R.Ta[2]));J.Nb=H.pc?w(ya,H.Pc):0;var O=H.dc;O[O.length-1]=0+4*H.i;var Sc=H.cc;H.wa=!w(ya,145);if(H.wa)for(var ga=H.Eb,ja=0,Z=ca,Z=0;4>Z;++Z){var V=Sc[Z],R;for(R=0;4>R;++R){var ta=Rf[O[O[O.length-1]+R]][V],za=0;do za=Sf[2*za+w(ya,ta[za])];while(0<za);V=-za;O[O[O.length-1]+R]=V;ga[ja]=V;ja++}Sc[Z]=V}else{var V=w(ya,156)?w(ya,128)?de:ee:w(ya,163)?fe:ge;H.Eb[0]=V;for(za=0;4>za;++za)O[za+O[O.length-1]]=V;for(za=0;4>za;++za)Sc[za]=V}H.Tc=!w(ya,142)?ge:!w(ya,114)?fe:
w(ya,183)?de:ee;if(ya.Ab)D=0;else{if(J.Nb)S.X=J.X=0,H.wa||(S.ua=J.ua=0),H.ja=0,H.Oa=0;else{var ia=ca,ka=ca,sa=ca,wa=Tf,Aa=H.yb[H.Lb],aa=H.z,ma=H.La[0],ua=U(4,0),xa=U(4,0),ea=U(4,0),pb=U(4,0),na=0,Ba=0,pa=ca,qa=ca,Sa=ca,aa=rc(0,384);if(H.wa)sa=0,wa=H.R.z[3];else{var ab=U(16,0),Ca=J.ua+ma.ua;J.ua=ma.ua=(0<Mc(T,H.R.z[1],Ca,Aa.sb,0,ab))+0;for(var sa=1,wa=H.R.z[0],qb=ab,Ta=aa,La=U(16,s),X=s,X=0;4>X;++X){var Da=qb[0+X]+qb[12+X],Ea=qb[4+X]+qb[8+X],Fa=qb[4+X]-qb[8+X],Ga=qb[0+X]-qb[12+X];La[0+X]=Da+Ea;La[8+
X]=Da-Ea;La[4+X]=Ga+Fa;La[12+X]=Ga-Fa}for(X=0;4>X;++X){var Oa=Ta[Ta.length-1],lb=La[0+4*X]+3,Da=lb+La[3+4*X],Ea=La[1+4*X]+La[2+4*X],Fa=La[1+4*X]-La[2+4*X],Ga=lb-La[3+4*X];Ta[Oa+0]=Da+Ea>>3;Ta[Oa+16]=Ga+Fa>>3;Ta[Oa+32]=Da-Ea>>3;Ta[Oa+48]=Ga-Fa>>3;Ta[Ta.length-1]+=64}aa[aa.length-1]=0}ea=Nb(vc[J.X&15]);pb=Nb(vc[ma.X&15]);for(qa=0;4>qa;++qa){for(var Eb=pb[qa],pa=0;4>pa;++pa){var Ca=Eb+ea[pa],Ka=Mc(T,wa,Ca,Aa.sc,sa,aa);ea[pa]=Eb=(0<Ka)+0;xa[pa]=(0!=aa[aa[aa.length-1]+0])+0;ua[pa]=(1<Ka)+0;aa[aa.length-
1]+=16}pb[qa]=Eb;Ba|=ob(xa,24-4*qa);na|=ob(ua,24-4*qa)}ia=ob(ea,24);ka=ob(pb,24);ea=Nb(vc[J.X>>4]);pb=Nb(vc[ma.X>>4]);for(Sa=0;4>Sa;Sa+=2){for(qa=0;2>qa;++qa){Eb=pb[Sa+qa];for(pa=0;2>pa;++pa)Ca=Eb+ea[Sa+pa],Ka=Mc(T,H.R.z[2],Ca,Aa.qc,0,aa),ea[Sa+pa]=Eb=(0<Ka)+0,xa[2*qa+pa]=(0!=aa[aa[aa.length-1]+0])+0,ua[2*qa+pa]=(1<Ka)+0,aa[aa.length-1]+=16;pb[Sa+qa]=Eb}Ba|=ob(xa,8-2*Sa);na|=ob(ua,8-2*Sa)}ia|=ob(ea,20);ka|=ob(pb,20);J.X=ia;ma.X=ka;H.z=aa;H.Oa=na+0;H.ja=na|Ba;J.Nb=!H.ja+0}D=!T.Ab}if(!D){c=Y(a,"VP8_STATUS_NOT_ENOUGH_DATA",
"Premature end-of-file encountered."+a.i+" "+a.d);break a}var P=a,da=P.Ea,Ma=Tc,Ua=P.Ea,Va=Uc,Wa=P.Ea,Xa=he;if(0<P.i){for(var ba=ca,ba=-1;16>ba;++ba)Ec(da,Ma+ba*f-4,da,Ma+ba*f+12);for(ba=-1;8>ba;++ba)Ec(Ua,Va+ba*f-4,Ua,Va+ba*f+4),Ec(Wa,Xa+ba*f-4,Wa,Xa+ba*f+4)}else{for(ba=0;16>ba;++ba)da[Ma+ba*f-1]=129;for(ba=0;8>ba;++ba)Ua[Va+ba*f-1]=129,Wa[Xa+ba*f-1]=129;0<P.d&&(da[Ma-1-f]=Ua[Va-1-f]=Wa[Xa-1-f]=129)}var Qa=P.Xc,Ra=16*+P.i,mb=P.Sc,vb=8*+P.i,wb=P.Vc,xb=8*+P.i,Za=P.z,fa=ca;if(0<P.d)N(da,Ma-f,Qa,Ra,
16),N(Ua,Va-f,mb,vb,8),N(Wa,Xa-f,wb,xb,8);else if(0==P.i){for(i=0;21>i;++i)da[Ma-f-1+i]=127;for(i=0;9>i;++i)Ua[Va-f-1+i]=127;for(i=0;9>i;++i)Wa[Xa-f-1+i]=127}if(P.wa){var Ya=Ma-f+16;0<P.d&&(P.i>=P.Ma-1?da[Ya+0]=da[Ya+1]=da[Ya+2]=da[Ya+3]=Qa[Ra+15]:N(da,Ya+0,Qa,Ra+16,4));for(var Fb=0;4>Fb;++Fb)da[Fb+Ya+4*f]=da[Fb+Ya+4*f]=da[Fb+Ya+8*f]=da[Fb+Ya+12*f]=da[Fb+Ya+0];for(fa=0;16>fa;fa++){var ac=da,bc=Ma+ie[fa];Uf[P.Eb[fa]](ac,bc);P.Oa&1<<fa?mc(Za,16*+fa,ac,bc,0):P.ja&1<<fa&&Qc(Za,16*+fa,ac,bc)}}else{var $a=
Fd(P,P.Eb[0]);Vf[$a](da,Ma);if(P.ja)for(fa=0;16>fa;fa++)ac=da,bc=Ma+ie[fa],P.Oa&1<<fa?mc(Za,16*+fa,ac,bc,0):P.ja&1<<fa&&Qc(Za,16*+fa,ac,bc)}$a=Fd(P,P.Tc);je[$a](Ua,Va);je[$a](Wa,Xa);if(P.ja&983040){var zb=P.z,Pa=256;P.Oa&983040?Pc(zb,Pa,Ua,Va):Rc(zb,Pa,Ua,Va)}if(P.ja&15728640){var Ab=P.z,Pa=320;P.Oa&15728640?Pc(Ab,Pa,Wa,Xa):Rc(Ab,Pa,Wa,Xa)}P.d<P.hb-1&&(N(Qa,Ra,da,Ma+15*f,16),N(mb,vb,Ua,Va+7*f,8),N(wb,xb,Wa,Xa+7*f,8));var Q=a;if(0<Q.A){var kb=Q.M[1+Q.i],Kb=Q.La[1+Q.i].Nb,ha=Q.Zb[Q.Lb];Q.ga.oc&&(ha+=
Q.ga.Lc[0],Q.wa&&(ha+=Q.ga.Gc[0]));ha=0>ha?0:63<ha?63:ha;kb.zc=ha;0<Q.ga.kb&&(ha=4<Q.ga.kb?ha>>2:ha>>1,ha>9-Q.ga.kb&&(ha=9-Q.ga.kb));kb.yc=1>ha?1:ha;kb.ab=(!Kb||Q.wa)+0}for(var Ia=ca,Bb=8*Q.Ja*Q.r,Qb=Q.ca,Ub=Q.da+16*Q.i+16*Q.Ja*Q.H,Wb=Q.aa,Xb=Q.ba+8*Q.i+Bb,Yb=Q.ra,Zb=Q.sa+8*Q.i+Bb,Ia=0;16>Ia;++Ia)N(Qb,Ub+Ia*Q.H,Q.Ea,+Tc+Ia*f,16);for(Ia=0;8>Ia;++Ia)N(Wb,Xb+Ia*Q.r,Q.Ea,+Uc+Ia*f,8),N(Yb,Zb+Ia*Q.r,Q.Ea,+he+Ia*f,8)}var K=a,I=b,cc=1,eb=K.oa;if(K.qb){var nb=K.rc,cc=cc&WebPWorkerSync(nb);$(nb.a==OK);if(cc){eb.N=
I;eb.ha=K.Ja;eb.d=K.d;eb.W=K.W;if(eb.W){var hc=eb.M;eb.M=K.M;K.M=hc}WebPWorkerLaunch(nb);++K.Ja==K.jb&&(K.Ja=0)}}else{eb.d=K.d;eb.W=K.W;b:{var Hb=1,rb=K.oa,ib=uc[K.A],yb=ib*K.H,dc=parseInt(ib/2)*K.r,Ib=16*rb.ha*K.H,jb=8*rb.ha*K.r,Jb=K.ca,Lb=K.da-yb+Ib,Ob=K.aa,Pb=K.ba-dc+jb,Rb=K.ra,Sb=K.sa-dc+jb,jc=0==rb.d,Tb=(rb.d>=K.hb-1)+0,ra=16*rb.d,fb=16*(rb.d+1);if(rb.W){var pc=K,wc=s,kc=pc.oa.d;$(pc.oa.W);for(wc=pc.lb;wc<pc.wb;++wc){var Na=pc,ec=wc,Vb=kc,xc=Na.oa,gb=Na.H,fc=xc.M[1+ec],sb=Na.ca,tb=Na.da+16*xc.ha*
gb+16*ec,Gb=fc.zc,hb=fc.yc,Ja=2*Gb+hb;if(0!=Gb)if(1==Na.A)0<ec&&ae(sb,tb,gb,Ja+4),fc.ab&&ce(sb,tb,gb,Ja),0<Vb&&$d(sb,tb,gb,Ja+4),fc.ab&&be(sb,tb,gb,Ja);else{var gc=Na.r,yc=Na.aa,zc=Na.ba+8*xc.ha*gc+8*ec,Ac=Na.ra,Bc=Na.sa+8*xc.ha*gc+8*ec,ub=Na.Ac.fb?40<=Gb?2:15<=Gb?1:0:40<=Gb?3:20<=Gb?2:15<=Gb?1:0;0<ec&&(Td(sb,tb,gb,Ja+4,hb,ub),Vd(yc,zc,Ac,Bc,gc,Ja+4,hb,ub));fc.ab&&(Xd(sb,tb,gb,Ja,hb,ub),Zd(yc,zc,Ac,Bc,gc,Ja,hb,ub));0<Vb&&(Sd(sb,tb,gb,Ja+4,hb,ub),Ud(yc,zc,Ac,Bc,gc,Ja+4,hb,ub));fc.ab&&(Wd(sb,tb,gb,
Ja,hb,ub),Yd(yc,zc,Ac,Bc,gc,Ja,hb,ub))}}}if(I.put){jc?(I.y=K.ca,I.D=K.da+Ib,I.c=K.aa,I.B=K.ba+jb,I.S=K.ra,I.C=K.sa+jb):(ra-=ib,I.y=Jb,I.D=Lb,I.c=Ob,I.B=Pb,I.S=Rb,I.C=Sb);Tb||(fb-=ib);fb>I.K&&(fb=I.K);if(K.Ga!=p&&ra<fb&&(0==ra?(I.p=qd(K,ra,fb-ra),I.q=0):I.q=qd(K,ra,fb-ra),I.p==p)){cc=Y(K,W,"Could not decode alpha data.");break b}if(ra<I.k){var qc=I.k-ra,ra=I.k;$(!(qc&1));I.D+=K.H*qc;I.B+=K.r*(qc>>1);I.C+=K.r*(qc>>1);I.p!=p&&(I.q+=I.width*qc)}ra<fb&&(I.D+=I.t,I.B+=I.t>>1,I.C+=I.t>>1,I.p!=p&&(I.q+=I.t),
I.w=ra-I.k,I.m=I.Ka-I.t,I.h=fb-ra,Hb=I.put(I))}rb.ha+1==K.jb&&!Tb&&(N(K.ca,K.da-yb,Jb,Lb+16*K.H,yb),N(K.aa,K.ba-dc,Ob,Pb+8*K.r,dc),N(K.ra,K.sa-dc,Rb,Sb+8*K.r,dc));cc=Hb}}if(!cc){c=Y(a,"VP8_STATUS_USER_ABORT","Output aborted.");break a}}var Cb;if(!(Cb=a.qb&&!WebPWorkerSync(a.rc))){var Db;if(Db=0<a.fc)$(a),$(0<a.fc),Db=!1;Cb=Db}c=Cb?0:1}var lc=c;b.Pb&&b.Pb(b);c=lc&1}if(!c)return ke(a),0;a.za=0;return c}function ke(a){a!=p&&(a.ib&&(a.ib=0),a.ib=p,a.Gb=0,a.za=0)}function Aa(a,b){return a+(1<<b)-1>>b}
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